ia64/linux-2.6.18-xen.hg

view drivers/char/pcmcia/cm4040_cs.c @ 912:dd42cdb0ab89

[IA64] Build blktap2 driver by default in x86 builds.

add CONFIG_XEN_BLKDEV_TAP2=y to buildconfigs/linux-defconfig_xen_ia64.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author Isaku Yamahata <yamahata@valinux.co.jp>
date Mon Jun 29 12:09:16 2009 +0900 (2009-06-29)
parents 831230e53067
children
line source
1 /*
2 * A driver for the Omnikey PCMCIA smartcard reader CardMan 4040
3 *
4 * (c) 2000-2004 Omnikey AG (http://www.omnikey.com/)
5 *
6 * (C) 2005-2006 Harald Welte <laforge@gnumonks.org>
7 * - add support for poll()
8 * - driver cleanup
9 * - add waitqueues
10 * - adhere to linux kernel coding style and policies
11 * - support 2.6.13 "new style" pcmcia interface
12 * - add class interface for udev device creation
13 *
14 * The device basically is a USB CCID compliant device that has been
15 * attached to an I/O-Mapped FIFO.
16 *
17 * All rights reserved, Dual BSD/GPL Licensed.
18 */
20 /* #define PCMCIA_DEBUG 6 */
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/slab.h>
25 #include <linux/init.h>
26 #include <linux/fs.h>
27 #include <linux/delay.h>
28 #include <linux/poll.h>
29 #include <linux/wait.h>
30 #include <asm/uaccess.h>
31 #include <asm/io.h>
33 #include <pcmcia/cs_types.h>
34 #include <pcmcia/cs.h>
35 #include <pcmcia/cistpl.h>
36 #include <pcmcia/cisreg.h>
37 #include <pcmcia/ciscode.h>
38 #include <pcmcia/ds.h>
40 #include "cm4040_cs.h"
43 #ifdef PCMCIA_DEBUG
44 #define reader_to_dev(x) (&handle_to_dev(x->p_dev->handle))
45 static int pc_debug = PCMCIA_DEBUG;
46 module_param(pc_debug, int, 0600);
47 #define DEBUGP(n, rdr, x, args...) do { \
48 if (pc_debug >= (n)) \
49 dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x, \
50 __FUNCTION__ , ##args); \
51 } while (0)
52 #else
53 #define DEBUGP(n, rdr, x, args...)
54 #endif
56 static char *version =
57 "OMNIKEY CardMan 4040 v1.1.0gm5 - All bugs added by Harald Welte";
59 #define CCID_DRIVER_BULK_DEFAULT_TIMEOUT (150*HZ)
60 #define CCID_DRIVER_ASYNC_POWERUP_TIMEOUT (35*HZ)
61 #define CCID_DRIVER_MINIMUM_TIMEOUT (3*HZ)
62 #define READ_WRITE_BUFFER_SIZE 512
63 #define POLL_LOOP_COUNT 1000
65 /* how often to poll for fifo status change */
66 #define POLL_PERIOD msecs_to_jiffies(10)
68 static void reader_release(struct pcmcia_device *link);
70 static int major;
71 static struct class *cmx_class;
73 #define BS_READABLE 0x01
74 #define BS_WRITABLE 0x02
76 struct reader_dev {
77 struct pcmcia_device *p_dev;
78 dev_node_t node;
79 wait_queue_head_t devq;
80 wait_queue_head_t poll_wait;
81 wait_queue_head_t read_wait;
82 wait_queue_head_t write_wait;
83 unsigned long buffer_status;
84 unsigned long timeout;
85 unsigned char s_buf[READ_WRITE_BUFFER_SIZE];
86 unsigned char r_buf[READ_WRITE_BUFFER_SIZE];
87 struct timer_list poll_timer;
88 };
90 static struct pcmcia_device *dev_table[CM_MAX_DEV];
92 #ifndef PCMCIA_DEBUG
93 #define xoutb outb
94 #define xinb inb
95 #else
96 static inline void xoutb(unsigned char val, unsigned short port)
97 {
98 if (pc_debug >= 7)
99 printk(KERN_DEBUG "outb(val=%.2x,port=%.4x)\n", val, port);
100 outb(val, port);
101 }
103 static inline unsigned char xinb(unsigned short port)
104 {
105 unsigned char val;
107 val = inb(port);
108 if (pc_debug >= 7)
109 printk(KERN_DEBUG "%.2x=inb(%.4x)\n", val, port);
110 return val;
111 }
112 #endif
114 /* poll the device fifo status register. not to be confused with
115 * the poll syscall. */
116 static void cm4040_do_poll(unsigned long dummy)
117 {
118 struct reader_dev *dev = (struct reader_dev *) dummy;
119 unsigned int obs = xinb(dev->p_dev->io.BasePort1
120 + REG_OFFSET_BUFFER_STATUS);
122 if ((obs & BSR_BULK_IN_FULL)) {
123 set_bit(BS_READABLE, &dev->buffer_status);
124 DEBUGP(4, dev, "waking up read_wait\n");
125 wake_up_interruptible(&dev->read_wait);
126 } else
127 clear_bit(BS_READABLE, &dev->buffer_status);
129 if (!(obs & BSR_BULK_OUT_FULL)) {
130 set_bit(BS_WRITABLE, &dev->buffer_status);
131 DEBUGP(4, dev, "waking up write_wait\n");
132 wake_up_interruptible(&dev->write_wait);
133 } else
134 clear_bit(BS_WRITABLE, &dev->buffer_status);
136 if (dev->buffer_status)
137 wake_up_interruptible(&dev->poll_wait);
139 mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
140 }
142 static void cm4040_stop_poll(struct reader_dev *dev)
143 {
144 del_timer_sync(&dev->poll_timer);
145 }
147 static int wait_for_bulk_out_ready(struct reader_dev *dev)
148 {
149 int i, rc;
150 int iobase = dev->p_dev->io.BasePort1;
152 for (i = 0; i < POLL_LOOP_COUNT; i++) {
153 if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
154 & BSR_BULK_OUT_FULL) == 0) {
155 DEBUGP(4, dev, "BulkOut empty (i=%d)\n", i);
156 return 1;
157 }
158 }
160 DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
161 dev->timeout);
162 rc = wait_event_interruptible_timeout(dev->write_wait,
163 test_and_clear_bit(BS_WRITABLE,
164 &dev->buffer_status),
165 dev->timeout);
167 if (rc > 0)
168 DEBUGP(4, dev, "woke up: BulkOut empty\n");
169 else if (rc == 0)
170 DEBUGP(4, dev, "woke up: BulkOut full, returning 0 :(\n");
171 else if (rc < 0)
172 DEBUGP(4, dev, "woke up: signal arrived\n");
174 return rc;
175 }
177 /* Write to Sync Control Register */
178 static int write_sync_reg(unsigned char val, struct reader_dev *dev)
179 {
180 int iobase = dev->p_dev->io.BasePort1;
181 int rc;
183 rc = wait_for_bulk_out_ready(dev);
184 if (rc <= 0)
185 return rc;
187 xoutb(val, iobase + REG_OFFSET_SYNC_CONTROL);
188 rc = wait_for_bulk_out_ready(dev);
189 if (rc <= 0)
190 return rc;
192 return 1;
193 }
195 static int wait_for_bulk_in_ready(struct reader_dev *dev)
196 {
197 int i, rc;
198 int iobase = dev->p_dev->io.BasePort1;
200 for (i = 0; i < POLL_LOOP_COUNT; i++) {
201 if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
202 & BSR_BULK_IN_FULL) == BSR_BULK_IN_FULL) {
203 DEBUGP(3, dev, "BulkIn full (i=%d)\n", i);
204 return 1;
205 }
206 }
208 DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
209 dev->timeout);
210 rc = wait_event_interruptible_timeout(dev->read_wait,
211 test_and_clear_bit(BS_READABLE,
212 &dev->buffer_status),
213 dev->timeout);
214 if (rc > 0)
215 DEBUGP(4, dev, "woke up: BulkIn full\n");
216 else if (rc == 0)
217 DEBUGP(4, dev, "woke up: BulkIn not full, returning 0 :(\n");
218 else if (rc < 0)
219 DEBUGP(4, dev, "woke up: signal arrived\n");
221 return rc;
222 }
224 static ssize_t cm4040_read(struct file *filp, char __user *buf,
225 size_t count, loff_t *ppos)
226 {
227 struct reader_dev *dev = filp->private_data;
228 int iobase = dev->p_dev->io.BasePort1;
229 size_t bytes_to_read;
230 unsigned long i;
231 size_t min_bytes_to_read;
232 int rc;
233 unsigned char uc;
235 DEBUGP(2, dev, "-> cm4040_read(%s,%d)\n", current->comm, current->pid);
237 if (count == 0)
238 return 0;
240 if (count < 10)
241 return -EFAULT;
243 if (filp->f_flags & O_NONBLOCK) {
244 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
245 DEBUGP(2, dev, "<- cm4040_read (failure)\n");
246 return -EAGAIN;
247 }
249 if (!pcmcia_dev_present(dev->p_dev))
250 return -ENODEV;
252 for (i = 0; i < 5; i++) {
253 rc = wait_for_bulk_in_ready(dev);
254 if (rc <= 0) {
255 DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
256 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
257 if (rc == -ERESTARTSYS)
258 return rc;
259 return -EIO;
260 }
261 dev->r_buf[i] = xinb(iobase + REG_OFFSET_BULK_IN);
262 #ifdef PCMCIA_DEBUG
263 if (pc_debug >= 6)
264 printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]);
265 }
266 printk("\n");
267 #else
268 }
269 #endif
271 bytes_to_read = 5 + le32_to_cpu(*(__le32 *)&dev->r_buf[1]);
273 DEBUGP(6, dev, "BytesToRead=%lu\n", bytes_to_read);
275 min_bytes_to_read = min(count, bytes_to_read + 5);
277 DEBUGP(6, dev, "Min=%lu\n", min_bytes_to_read);
279 for (i = 0; i < (min_bytes_to_read-5); i++) {
280 rc = wait_for_bulk_in_ready(dev);
281 if (rc <= 0) {
282 DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
283 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
284 if (rc == -ERESTARTSYS)
285 return rc;
286 return -EIO;
287 }
288 dev->r_buf[i+5] = xinb(iobase + REG_OFFSET_BULK_IN);
289 #ifdef PCMCIA_DEBUG
290 if (pc_debug >= 6)
291 printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]);
292 }
293 printk("\n");
294 #else
295 }
296 #endif
298 *ppos = min_bytes_to_read;
299 if (copy_to_user(buf, dev->r_buf, min_bytes_to_read))
300 return -EFAULT;
302 rc = wait_for_bulk_in_ready(dev);
303 if (rc <= 0) {
304 DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
305 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
306 if (rc == -ERESTARTSYS)
307 return rc;
308 return -EIO;
309 }
311 rc = write_sync_reg(SCR_READER_TO_HOST_DONE, dev);
312 if (rc <= 0) {
313 DEBUGP(5, dev, "write_sync_reg c=%.2x\n", rc);
314 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
315 if (rc == -ERESTARTSYS)
316 return rc;
317 else
318 return -EIO;
319 }
321 uc = xinb(iobase + REG_OFFSET_BULK_IN);
323 DEBUGP(2, dev, "<- cm4040_read (successfully)\n");
324 return min_bytes_to_read;
325 }
327 static ssize_t cm4040_write(struct file *filp, const char __user *buf,
328 size_t count, loff_t *ppos)
329 {
330 struct reader_dev *dev = filp->private_data;
331 int iobase = dev->p_dev->io.BasePort1;
332 ssize_t rc;
333 int i;
334 unsigned int bytes_to_write;
336 DEBUGP(2, dev, "-> cm4040_write(%s,%d)\n", current->comm, current->pid);
338 if (count == 0) {
339 DEBUGP(2, dev, "<- cm4040_write empty read (successfully)\n");
340 return 0;
341 }
343 if (count < 5) {
344 DEBUGP(2, dev, "<- cm4040_write buffersize=%Zd < 5\n", count);
345 return -EIO;
346 }
348 if (filp->f_flags & O_NONBLOCK) {
349 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
350 DEBUGP(4, dev, "<- cm4040_write (failure)\n");
351 return -EAGAIN;
352 }
354 if (!pcmcia_dev_present(dev->p_dev))
355 return -ENODEV;
357 bytes_to_write = count;
358 if (copy_from_user(dev->s_buf, buf, bytes_to_write))
359 return -EFAULT;
361 switch (dev->s_buf[0]) {
362 case CMD_PC_TO_RDR_XFRBLOCK:
363 case CMD_PC_TO_RDR_SECURE:
364 case CMD_PC_TO_RDR_TEST_SECURE:
365 case CMD_PC_TO_RDR_OK_SECURE:
366 dev->timeout = CCID_DRIVER_BULK_DEFAULT_TIMEOUT;
367 break;
369 case CMD_PC_TO_RDR_ICCPOWERON:
370 dev->timeout = CCID_DRIVER_ASYNC_POWERUP_TIMEOUT;
371 break;
373 case CMD_PC_TO_RDR_GETSLOTSTATUS:
374 case CMD_PC_TO_RDR_ICCPOWEROFF:
375 case CMD_PC_TO_RDR_GETPARAMETERS:
376 case CMD_PC_TO_RDR_RESETPARAMETERS:
377 case CMD_PC_TO_RDR_SETPARAMETERS:
378 case CMD_PC_TO_RDR_ESCAPE:
379 case CMD_PC_TO_RDR_ICCCLOCK:
380 default:
381 dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
382 break;
383 }
385 rc = write_sync_reg(SCR_HOST_TO_READER_START, dev);
386 if (rc <= 0) {
387 DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
388 DEBUGP(2, dev, "<- cm4040_write (failed)\n");
389 if (rc == -ERESTARTSYS)
390 return rc;
391 else
392 return -EIO;
393 }
395 DEBUGP(4, dev, "start \n");
397 for (i = 0; i < bytes_to_write; i++) {
398 rc = wait_for_bulk_out_ready(dev);
399 if (rc <= 0) {
400 DEBUGP(5, dev, "wait_for_bulk_out_ready rc=%.2Zx\n",
401 rc);
402 DEBUGP(2, dev, "<- cm4040_write (failed)\n");
403 if (rc == -ERESTARTSYS)
404 return rc;
405 else
406 return -EIO;
407 }
409 xoutb(dev->s_buf[i],iobase + REG_OFFSET_BULK_OUT);
410 }
411 DEBUGP(4, dev, "end\n");
413 rc = write_sync_reg(SCR_HOST_TO_READER_DONE, dev);
415 if (rc <= 0) {
416 DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
417 DEBUGP(2, dev, "<- cm4040_write (failed)\n");
418 if (rc == -ERESTARTSYS)
419 return rc;
420 else
421 return -EIO;
422 }
424 DEBUGP(2, dev, "<- cm4040_write (successfully)\n");
425 return count;
426 }
428 static unsigned int cm4040_poll(struct file *filp, poll_table *wait)
429 {
430 struct reader_dev *dev = filp->private_data;
431 unsigned int mask = 0;
433 poll_wait(filp, &dev->poll_wait, wait);
435 if (test_and_clear_bit(BS_READABLE, &dev->buffer_status))
436 mask |= POLLIN | POLLRDNORM;
437 if (test_and_clear_bit(BS_WRITABLE, &dev->buffer_status))
438 mask |= POLLOUT | POLLWRNORM;
440 DEBUGP(2, dev, "<- cm4040_poll(%u)\n", mask);
442 return mask;
443 }
445 static int cm4040_open(struct inode *inode, struct file *filp)
446 {
447 struct reader_dev *dev;
448 struct pcmcia_device *link;
449 int minor = iminor(inode);
451 if (minor >= CM_MAX_DEV)
452 return -ENODEV;
454 link = dev_table[minor];
455 if (link == NULL || !pcmcia_dev_present(link))
456 return -ENODEV;
458 if (link->open)
459 return -EBUSY;
461 dev = link->priv;
462 filp->private_data = dev;
464 if (filp->f_flags & O_NONBLOCK) {
465 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
466 return -EAGAIN;
467 }
469 link->open = 1;
471 dev->poll_timer.data = (unsigned long) dev;
472 mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
474 DEBUGP(2, dev, "<- cm4040_open (successfully)\n");
475 return nonseekable_open(inode, filp);
476 }
478 static int cm4040_close(struct inode *inode, struct file *filp)
479 {
480 struct reader_dev *dev = filp->private_data;
481 struct pcmcia_device *link;
482 int minor = iminor(inode);
484 DEBUGP(2, dev, "-> cm4040_close(maj/min=%d.%d)\n", imajor(inode),
485 iminor(inode));
487 if (minor >= CM_MAX_DEV)
488 return -ENODEV;
490 link = dev_table[minor];
491 if (link == NULL)
492 return -ENODEV;
494 cm4040_stop_poll(dev);
496 link->open = 0;
497 wake_up(&dev->devq);
499 DEBUGP(2, dev, "<- cm4040_close\n");
500 return 0;
501 }
503 static void cm4040_reader_release(struct pcmcia_device *link)
504 {
505 struct reader_dev *dev = link->priv;
507 DEBUGP(3, dev, "-> cm4040_reader_release\n");
508 while (link->open) {
509 DEBUGP(3, dev, KERN_INFO MODULE_NAME ": delaying release "
510 "until process has terminated\n");
511 wait_event(dev->devq, (link->open == 0));
512 }
513 DEBUGP(3, dev, "<- cm4040_reader_release\n");
514 return;
515 }
517 static int reader_config(struct pcmcia_device *link, int devno)
518 {
519 struct reader_dev *dev;
520 tuple_t tuple;
521 cisparse_t parse;
522 u_char buf[64];
523 int fail_fn, fail_rc;
524 int rc;
526 tuple.DesiredTuple = CISTPL_CONFIG;
527 tuple.Attributes = 0;
528 tuple.TupleData = buf;
529 tuple.TupleDataMax = sizeof(buf);
530 tuple.TupleOffset = 0;
532 if ((fail_rc = pcmcia_get_first_tuple(link, &tuple)) != CS_SUCCESS) {
533 fail_fn = GetFirstTuple;
534 goto cs_failed;
535 }
536 if ((fail_rc = pcmcia_get_tuple_data(link, &tuple)) != CS_SUCCESS) {
537 fail_fn = GetTupleData;
538 goto cs_failed;
539 }
540 if ((fail_rc = pcmcia_parse_tuple(link, &tuple, &parse))
541 != CS_SUCCESS) {
542 fail_fn = ParseTuple;
543 goto cs_failed;
544 }
546 link->conf.ConfigBase = parse.config.base;
547 link->conf.Present = parse.config.rmask[0];
549 link->io.BasePort2 = 0;
550 link->io.NumPorts2 = 0;
551 link->io.Attributes2 = 0;
552 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
553 for (rc = pcmcia_get_first_tuple(link, &tuple);
554 rc == CS_SUCCESS;
555 rc = pcmcia_get_next_tuple(link, &tuple)) {
556 rc = pcmcia_get_tuple_data(link, &tuple);
557 if (rc != CS_SUCCESS)
558 continue;
559 rc = pcmcia_parse_tuple(link, &tuple, &parse);
560 if (rc != CS_SUCCESS)
561 continue;
563 link->conf.ConfigIndex = parse.cftable_entry.index;
565 if (!parse.cftable_entry.io.nwin)
566 continue;
568 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
569 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
570 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
571 if (!(parse.cftable_entry.io.flags & CISTPL_IO_8BIT))
572 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
573 if (!(parse.cftable_entry.io.flags & CISTPL_IO_16BIT))
574 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
575 link->io.IOAddrLines = parse.cftable_entry.io.flags
576 & CISTPL_IO_LINES_MASK;
577 rc = pcmcia_request_io(link, &link->io);
579 dev_printk(KERN_INFO, &handle_to_dev(link), "foo");
580 if (rc == CS_SUCCESS)
581 break;
582 else
583 dev_printk(KERN_INFO, &handle_to_dev(link),
584 "pcmcia_request_io failed 0x%x\n", rc);
585 }
586 if (rc != CS_SUCCESS)
587 goto cs_release;
589 link->conf.IntType = 00000002;
591 if ((fail_rc = pcmcia_request_configuration(link,&link->conf))
592 !=CS_SUCCESS) {
593 fail_fn = RequestConfiguration;
594 dev_printk(KERN_INFO, &handle_to_dev(link),
595 "pcmcia_request_configuration failed 0x%x\n",
596 fail_rc);
597 goto cs_release;
598 }
600 dev = link->priv;
601 sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
602 dev->node.major = major;
603 dev->node.minor = devno;
604 dev->node.next = &dev->node;
606 DEBUGP(2, dev, "device " DEVICE_NAME "%d at 0x%.4x-0x%.4x\n", devno,
607 link->io.BasePort1, link->io.BasePort1+link->io.NumPorts1);
608 DEBUGP(2, dev, "<- reader_config (succ)\n");
610 return 0;
612 cs_failed:
613 cs_error(link, fail_fn, fail_rc);
614 cs_release:
615 reader_release(link);
616 return -ENODEV;
617 }
619 static void reader_release(struct pcmcia_device *link)
620 {
621 cm4040_reader_release(link->priv);
622 pcmcia_disable_device(link);
623 }
625 static int reader_probe(struct pcmcia_device *link)
626 {
627 struct reader_dev *dev;
628 int i, ret;
630 for (i = 0; i < CM_MAX_DEV; i++) {
631 if (dev_table[i] == NULL)
632 break;
633 }
635 if (i == CM_MAX_DEV)
636 return -ENODEV;
638 dev = kzalloc(sizeof(struct reader_dev), GFP_KERNEL);
639 if (dev == NULL)
640 return -ENOMEM;
642 dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
643 dev->buffer_status = 0;
645 link->priv = dev;
646 dev->p_dev = link;
648 link->conf.IntType = INT_MEMORY_AND_IO;
649 dev_table[i] = link;
651 init_waitqueue_head(&dev->devq);
652 init_waitqueue_head(&dev->poll_wait);
653 init_waitqueue_head(&dev->read_wait);
654 init_waitqueue_head(&dev->write_wait);
655 init_timer(&dev->poll_timer);
656 dev->poll_timer.function = &cm4040_do_poll;
658 ret = reader_config(link, i);
659 if (ret)
660 return ret;
662 class_device_create(cmx_class, NULL, MKDEV(major, i), NULL,
663 "cmx%d", i);
665 return 0;
666 }
668 static void reader_detach(struct pcmcia_device *link)
669 {
670 struct reader_dev *dev = link->priv;
671 int devno;
673 /* find device */
674 for (devno = 0; devno < CM_MAX_DEV; devno++) {
675 if (dev_table[devno] == link)
676 break;
677 }
678 if (devno == CM_MAX_DEV)
679 return;
681 reader_release(link);
683 dev_table[devno] = NULL;
684 kfree(dev);
686 class_device_destroy(cmx_class, MKDEV(major, devno));
688 return;
689 }
691 static const struct file_operations reader_fops = {
692 .owner = THIS_MODULE,
693 .read = cm4040_read,
694 .write = cm4040_write,
695 .open = cm4040_open,
696 .release = cm4040_close,
697 .poll = cm4040_poll,
698 };
700 static struct pcmcia_device_id cm4040_ids[] = {
701 PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0200),
702 PCMCIA_DEVICE_PROD_ID12("OMNIKEY", "CardMan 4040",
703 0xE32CDD8C, 0x8F23318B),
704 PCMCIA_DEVICE_NULL,
705 };
706 MODULE_DEVICE_TABLE(pcmcia, cm4040_ids);
708 static struct pcmcia_driver reader_driver = {
709 .owner = THIS_MODULE,
710 .drv = {
711 .name = "cm4040_cs",
712 },
713 .probe = reader_probe,
714 .remove = reader_detach,
715 .id_table = cm4040_ids,
716 };
718 static int __init cm4040_init(void)
719 {
720 int rc;
722 printk(KERN_INFO "%s\n", version);
723 cmx_class = class_create(THIS_MODULE, "cardman_4040");
724 if (!cmx_class)
725 return -1;
727 major = register_chrdev(0, DEVICE_NAME, &reader_fops);
728 if (major < 0) {
729 printk(KERN_WARNING MODULE_NAME
730 ": could not get major number\n");
731 return -1;
732 }
734 rc = pcmcia_register_driver(&reader_driver);
735 if (rc < 0) {
736 unregister_chrdev(major, DEVICE_NAME);
737 return rc;
738 }
740 return 0;
741 }
743 static void __exit cm4040_exit(void)
744 {
745 printk(KERN_INFO MODULE_NAME ": unloading\n");
746 pcmcia_unregister_driver(&reader_driver);
747 unregister_chrdev(major, DEVICE_NAME);
748 class_destroy(cmx_class);
749 }
751 module_init(cm4040_init);
752 module_exit(cm4040_exit);
753 MODULE_LICENSE("Dual BSD/GPL");